I'm writing this almost two years later. I can't remember much, really.

I went by bike, through Bebenhausen, and further up. Near the location I must have had a few problems with finding access to this piece of forest. There was a fence to the main road, and a lack of viable areas near the hashpoint, so I circled it and tried various gates (the fence and the gates don't mark any kind of "no trespassing" area but are to keep large game in the forest) and routes, and somehow I must have reached the point in the end. Went back home including a detour via Entringen.